Sheet-straightener for printing-presses



(NoModeL) 2 Sheets-Sheet 1. H. LOEWENBAGH & W. F. H. MATTER. SHEETSTRAIGHTENER FOR PRINTING PRESSES.

No. 381,800. Patented Apr. 24, 1888..

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H. LOEWENBAGH & W. F. H. MATTER.

SHEET STRAIGHTBNER FOR PRINTING PRESSES.

Patented Apr. 24, 1888.

UNITED STATES PATENT OFFICE.

HUGO LOEWENBACH AND \VILLIAM F. H. MATTER, OF MILWAUKEE, WISCONSIN.

SHEET-STRAIGHTENER FOR PRlNTlNG-PRESSES.

SPECIFICATION forming part of Letters Patent No. 381,800, dated April24, 1888.

Serial No 230,3-1. (No molel.)

To all whom it may concern.-

Be it known that we, HUGO LOEWENBACH and WILLIAM F. H. MATTER, ofMilwaukee, in the county of Milwaukee, and in the State of Wisconsin,have invented certain new and useful Improvements in Sheet-Straightenersfor PrintingPresses; and we do hereby declare that the following is afull, clear, and exact description thereof.

Our invention relates to sheet straighteners for printingpresses; and itconsists in certain peculiarities of construction and combination ofparts, to be hereinafter described with reference to the accompanying drawi ngs, and subseqnently claimed.

In the drawings, Figure 1 represents a perspective view of oursheet-straightener operatively connected to the fly of a printing-press;Figs. 2 and 3, vertical longitudinal sections of the same, illustratingits operation; and Fig. 4, a perspective view of our device inverted.

Referring by letter to the drawings, A rep resents the main frame of ourdevice, that is designed to be clamped or otherwise suitably secured tothe fly-table of a printingpress, said frame having a top, B, providedwith a series of parallel transverse grooves, a, and longitudinal slots1). To the main frame be neath its top piece, B, are rigidly securedguide-blocks 0, provided with tongues c, that engage correspondinggrooves, d, in the side pieces ofa sliding frame, D. Aspiral spring, E,has its respective ends secured to the top B of the main frame and across-piece, e, of the sliding frame D, and suitably secured to the sidepieces of said sliding frame are the ends of a strap, F, that runs overpulleysf, journaled in the guide-blocks C, and connects with an arm, 9,projecting from the bottom of a pressfly, G.

The rear portion of the sliding frame D consists of a transverse piece,d, that is laterally extended beyond the side pieces, to which it ismade fast, and this portion d of said sliding frame is provided with aseries of sockets, h, for gage-pins H, that extend up through and beyondthe slots 1) in the top B of the main frame. Guides B are provided forthe transverse piece d' of the sliding frame.

The gage-pins H may correspond in number to the slots bin the top piece,B, of the main frame; or a less number of said pins may be employed andtheir positions varied with relation to the slots, according to the sizeof the sheets being delivered from the press.

The side pieces of the sliding frame D are provided with convex lugs02', that come against the adjacent rounded ends i of hell cranks I, thelatter being pivot-ally connected to guidebars J, and having their otherends, 6, slotted to engage pinsj on lateral slides K, that are seated inguides cut in the bars .I and the sides of the main frame.

Spiral springs L have their respective ends secured to the bell cranks Iand to the top piece, B, of the main frame, these springs serving tokeep the ends 2" of said bell-cranks in the path of the lugs d on thesliding frame.

Pivotally secured to and laterally adjustable on each slide K are longand short gage-arms M N, and the free ends m a of these arms aredesigned to engage the grooves a in the top piece, B, of the main frame.\Ve have shown and described two gage arms on each slide as thepreferred construction; but it is obvious that one of these arms may beomitted, if desired.

Longitudinally and pivotally adjustable on the top piece, B, of the mainframe are gagearms 0, said arms being retained in their fixed positionafter being adjusted.

In the operation of our invention the several gage-arms M N O areadjusted to leave a space on the top piece, B, of the main frame betweenthem and the gagepins II, that corresponds with the size of the sheetsto be delivered from the printing-press to which our invention may beattached, this adjustment being best illustrated by Fig. 1. As shown byFigs. 1 and 2, the fly G is in position to receive the sheet as it comesfrom the press. When the fly is actuated to deliver the sheet, the strapF is pulled forward to operate the siiding frame D, and thereby carrythe gagepins H rearward, while at the same time the 5 ICC on the strap Fwill be slackened and the contracting force of the spring E will drawthe sliding frame back to its normal position, the lugs d on said framecoming in contact with the bell-cranks I,whereby the latter are operatedto draw in the slide K. The closing-in movement of the gage-pin H andgage-arms M Nstraightens the delivered sheet, and all the sheets arebrought up snug against the fixed gage-arms O, as shown by Fig. 3.

Having thus fully described our invention, what we claim as new, anddesire to secure by Letters Patent, is-

1. A sheet-straightener for printingpresses, comprising a suitable mainframe, stationary gage-arms arranged thereon, a sliding frame carryinggage-pins and having its sides provided with lugs, lateral slidesoperative in the main frame and carrying one or more gagearms,bell-cranks connected to the slides and arranged to be actuated by thelugs on the sliding frame, and a strap for operatively connecting thelatter frame with a press-fly, sub stantially as and for the purpose setforth.

2. Asheet-straightener for printing-presses, comprising a main framehaving a top piece provided with a series of transverse grooves and aseries of longitudinal slots, a sliding frame carryinggage-pins thatengage the slots, slides operative in the main frame, one or moregage-arms pivotally connected to the slides to be laterally adjustablethereon and having their free ends arranged to play in thegrooves of themain-frame top piece, normally stationary gage arms pivoted to said toppiece and longitudinally adjustable thereon, a lever mechanism foractuating the slides simultaneously with a movement of said slidingframe, and a strap for operatively connecting the latter frame with apress-fly, substantially as and for the purpose set forth.

3. The combination of the mainframe A,provided with the guide-blocksO,thesliding frame I), carrying gage-pins H and having its sidesprovided with lugs d pulleysf, journaled in the guide-blocks, the strapF, for connecting said sliding frame with a press-fly, the spring E,uniting both frames, the slides K, bellcranks I,and springs L, thegage-arms M N,adjustably secured to said slides, and the gage arms 0,adj ustably connected to said main frame, substantially as and for thepurpose set forth.

4. The combination ofthe main frame A,provided with the guide-blocksG,the sliding frame D, carrying gage-pins H and having its sidesprovided with lugs d", pulleysf, journaled in said guide-blocks, thestrap F, for connecting said sliding frame with a press-fly, the springE, uniting both frames, bell-cranks I, guide bars J, slides K, springsL, and the adj nstable gagearms M N O, substantially as and for thepurpose set forth.

In testimony that we claim the foregoing We have hereunto set our hands,at Milwaukee, in

the county of Milwaukee and State of \Visconsin, in the presence of twowitnesses.

HUGO LOEWENBAGH. WILLIAM F. H. MATTER. \Vitnesses:

N. E. OLIPHANT, WM. F. MAAs.

